Electric Tool Torsion Control for Precision Screw Tightening

The patent replaces the traditional mechanical torsion cup with fixed gearshifts with an electronic control system. The controller receives user input through electronic interfaces and automatically adjusts the motor output torque, eliminating the need for mechanical gearshifts while enabling precise torsion control. This substitution of mechanical system with electronic system resolves the contradiction between ease of operation and device complexity.

The patent implements dynamic torsion adjustment where the controller can modify the torsion value in real-time based on user input and work conditions. Unlike fixed mechanical gearshifts, the electronic system allows continuous adjustment of torsion parameters, making the device adaptable to different screw types and material conditions, thereby improving operational precision without requiring complex mechanical structures.

The patent enables the electric screwdriver to perform the function of manual tightening automatically. The controller monitors the screwing process in real-time, detects when the screw reaches its tightening limit through torque sensing or position feedback, and automatically stops the motor. This self-service capability eliminates the need for users to switch between electrical and manual modes, thereby maintaining high precision while significantly improving working efficiency.

The patent incorporates a feedback mechanism where the controller continuously monitors the screwing process through sensors that detect torque, position, or current parameters. When the feedback indicates that the screw has reached the desired tightening state, the controller automatically stops the motor. This closed-loop feedback system ensures precise screw tightening without requiring manual intervention, thus resolving the contradiction between manufacturing precision and productivity.